用力推动一静止在水平桌面上的玩具小车,小车离开手后还能继续向

用力推动一静止在水平桌面上的玩具小车,小车离开手后还能继续向前运动,这是因为小车具有   ;但小车运动一段距离后又会停下,这是因为它受到   作用的原因。

答案

惯性;摩擦力(摩擦阻力、阻力)

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